Ib qho cuab yeej muaj peev xwm tiv taus qhov hluav taws xob thiab kev ntxhov siab ntawm cov neeg siv khoom nruab nrab ntawm cov neeg siv hluav taws xob sib txawv lossis nruab nrab ntawm cov khoom siv hluav taws xob thiab cov khoom siv hauv av. Muaj ntau ntau hom thiab cov duab ntawm kev sib txuas ncej insulators. Txawm hais tias cov qauv thiab cov duab ntawm ntau hom insulators sib txawv heev, lawv tag nrho cov tsim ntawm insulating qhov chaw thiab txuas fittings. Insulator yog ib qho tshwj xeeb rwb thaiv tsev tswj, uas tuaj yeem ua lub luag haujlwm tseem ceeb hauv cov kab hluav taws xob siv hluav taws xob. Nyob rau hauv thaum ntxov xyoo, insulators feem ntau yog siv nyob rau hauv lub hwj chim ncej, thiab maj mam tsim nyob rau hauv high-voltage fais fab kab. Muaj ntau lub disc-shaped insulators tau dai ntawm ib qho kawg ntawm kev sib txuas ntauwd.
Nws yog ua kom lub creepage nrug. Nws feem ntau yog ua los ntawm iav los yog ceramic, uas yog hu ua insulator. Lub insulator yuav tsum tsis txhob poob vim muaj ntau yam kev ntxhov siab ntawm electromechanical los ntawm kev hloov ntawm ib puag ncig thiab hluav taws xob load, txwv tsis pub lub insulator yuav tsis ua lub luag haujlwm tseem ceeb thiab yuav ua rau cov kev pabcuam thiab kev ua haujlwm ntawm tag nrho lub neej puas. Insulators tuaj yeem muab faib ua cov khoom siv hluav taws xob thiab cov khoom xa tawm raws li cov txheej txheem sib txawv; Raws li cov khoom siv insulating sib txawv, lawv tuaj yeem muab faib ua porcelain insulator, iav insulator thiab composite insulator (tseem hu ua composite insulator).
Nws tuaj yeem muab faib ua cov hluav taws xob qis thiab cov hluav taws xob hluav taws xob ntau raws li qhov sib txawv voltage; Raws li qhov sib txawv ib puag ncig, cov pa phem resistant insulators siv nyob rau hauv cov pa phem tau muab los; DC insulators yog muab los ntawm ntau hom kev siv hluav taws xob; Kuj tseem muaj cov insulators rau ntau lub hom phiaj tshwj xeeb, xws li rwb thaiv tsev hla caj npab, semiconductor glaze insulator, nro insulator rau hluav taws xob faib, spool insulator thiab thaiv thaiv. Tsis tas li ntawd, raws li qhov sib txawv ntawm qhov sib txawv ntawm insulating qhov chaw, lawv tuaj yeem muab faib ua hom A, piv txwv li tsis tawg insulator thiab hom B, piv txwv li tawg insulator.